--- a
+++ b/src/dvdread/nav_types.h
@@ -0,0 +1,248 @@
+/*
+ * Copyright (C) 2000, 2001, 2002 H́±…kan Hjort <d95hjort@dtek.chalmers.se>
+ *
+ * The data structures in this file should represent the layout of the
+ * pci and dsi packets as they are stored in the stream.  Information
+ * found by reading the source to VOBDUMP is the base for the structure
+ * and names of these data types.
+ *
+ * VOBDUMP: a program for examining DVD .VOB files.
+ * Copyright 1998, 1999 Eric Smith <eric@brouhaha.com>
+ *
+ * VOBDUMP is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.  Note that I am not
+ * granting permission to redistribute or modify VOBDUMP under the terms
+ * of any later version of the General Public License.
+ *
+ * This program is distributed in the hope that it will be useful (or at
+ * least amusing), but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef LIBDVDREAD_NAV_TYPES_H
+#define LIBDVDREAD_NAV_TYPES_H
+
+#include <inttypes.h>
+#include "ifo_types.h" /* only dvd_time_t, vm_cmd_t and user_ops_t */
+
+/* The length including the substream id byte. */
+#define PCI_BYTES 0x3d4
+#define DSI_BYTES 0x3fa
+
+#define PS2_PCI_SUBSTREAM_ID 0x00
+#define PS2_DSI_SUBSTREAM_ID 0x01
+
+/* Remove this */
+#define DSI_START_BYTE 1031
+
+/**
+ * PCI General Information
+ */
+typedef struct {
+  uint32_t nv_pck_lbn;      /**< sector address of this nav pack */
+  uint16_t vobu_cat;        /**< 'category' of vobu */
+  uint16_t zero1;           /**< reserved */
+  user_ops_t vobu_uop_ctl;  /**< UOP of vobu */
+  uint32_t vobu_s_ptm;      /**< start presentation time of vobu */
+  uint32_t vobu_e_ptm;      /**< end presentation time of vobu */
+  uint32_t vobu_se_e_ptm;   /**< end ptm of sequence end in vobu */
+  dvd_time_t e_eltm;        /**< Cell elapsed time */
+  char vobu_isrc[32];
+} ATTRIBUTE_PACKED pci_gi_t;
+
+/**
+ * Non Seamless Angle Information
+ */
+typedef struct {
+  uint32_t nsml_agl_dsta[9];  /**< address of destination vobu in AGL_C#n */
+} ATTRIBUTE_PACKED nsml_agli_t;
+
+/**
+ * Highlight General Information
+ *
+ * For btngrX_dsp_ty the bits have the following meaning:
+ * 000b: normal 4/3 only buttons
+ * XX1b: wide (16/9) buttons
+ * X1Xb: letterbox buttons
+ * 1XXb: pan&scan buttons
+ */
+typedef struct {
+  uint16_t hli_ss; /**< status, only low 2 bits 0: no buttons, 1: different 2: equal 3: eual except for button cmds */
+  uint32_t hli_s_ptm;              /**< start ptm of hli */
+  uint32_t hli_e_ptm;              /**< end ptm of hli */
+  uint32_t btn_se_e_ptm;           /**< end ptm of button select */
+  unsigned int zero1 : 2;          /**< reserved */
+  unsigned int btngr_ns : 2;       /**< number of button groups 1, 2 or 3 with 36/18/12 buttons */
+  unsigned int zero2 : 1;          /**< reserved */
+  unsigned int btngr1_dsp_ty : 3;  /**< display type of subpic stream for button group 1 */
+  unsigned int zero3 : 1;          /**< reserved */
+  unsigned int btngr2_dsp_ty : 3;  /**< display type of subpic stream for button group 2 */
+  unsigned int zero4 : 1;          /**< reserved */
+  unsigned int btngr3_dsp_ty : 3;  /**< display type of subpic stream for button group 3 */
+  uint8_t btn_ofn;     /**< button offset number range 0-255 */
+  uint8_t btn_ns;      /**< number of valid buttons  <= 36/18/12 (low 6 bits) */
+  uint8_t nsl_btn_ns;  /**< number of buttons selectable by U_BTNNi (low 6 bits)   nsl_btn_ns <= btn_ns */
+  uint8_t zero5;       /**< reserved */
+  uint8_t fosl_btnn;   /**< forcedly selected button  (low 6 bits) */
+  uint8_t foac_btnn;   /**< forcedly activated button (low 6 bits) */
+} ATTRIBUTE_PACKED hl_gi_t;
+
+
+/**
+ * Button Color Information Table
+ * Each entry beeing a 32bit word that contains the color indexs and alpha
+ * values to use.  They are all represented by 4 bit number and stored
+ * like this [Ci3, Ci2, Ci1, Ci0, A3, A2, A1, A0].   The actual palette
+ * that the indexes reference is in the PGC.
+ * @TODO split the uint32_t into a struct
+ */
+typedef struct {
+  uint32_t btn_coli[3][2];  /**< [button color number-1][select:0/action:1] */
+} ATTRIBUTE_PACKED btn_colit_t;
+
+/**
+ * Button Information
+ *
+ * NOTE: I've had to change the structure from the disk layout to get
+ * the packing to work with Sun's Forte C compiler.
+ * The 4 and 7 bytes are 'rotated' was: ABC DEF GHIJ  is: ABCG DEFH IJ
+ */
+typedef struct {
+  unsigned int btn_coln         : 2;  /**< button color number */
+  unsigned int x_start          : 10; /**< x start offset within the overlay */
+  unsigned int zero1            : 2;  /**< reserved */
+  unsigned int x_end            : 10; /**< x end offset within the overlay */
+
+  unsigned int auto_action_mode : 2;  /**< 0: no, 1: activated if selected */
+  unsigned int y_start          : 10; /**< y start offset within the overlay */
+  unsigned int zero2            : 2;  /**< reserved */
+  unsigned int y_end            : 10; /**< y end offset within the overlay */
+
+  unsigned int zero3            : 2;  /**< reserved */
+  unsigned int up               : 6;  /**< button index when pressing up */
+  unsigned int zero4            : 2;  /**< reserved */
+  unsigned int down             : 6;  /**< button index when pressing down */
+  unsigned int zero5            : 2;  /**< reserved */
+  unsigned int left             : 6;  /**< button index when pressing left */
+  unsigned int zero6            : 2;  /**< reserved */
+  unsigned int right            : 6;  /**< button index when pressing right */
+  vm_cmd_t cmd;
+} ATTRIBUTE_PACKED btni_t;
+
+/**
+ * Highlight Information
+ */
+typedef struct {
+  hl_gi_t     hl_gi;
+  btn_colit_t btn_colit;
+  btni_t      btnit[36];
+} ATTRIBUTE_PACKED hli_t;
+
+/**
+ * PCI packet
+ */
+typedef struct {
+  pci_gi_t    pci_gi;
+  nsml_agli_t nsml_agli;
+  hli_t       hli;
+  uint8_t     zero1[189];
+} ATTRIBUTE_PACKED pci_t;
+
+
+
+
+/**
+ * DSI General Information
+ */
+typedef struct {
+  uint32_t nv_pck_scr;
+  uint32_t nv_pck_lbn;      /**< sector address of this nav pack */
+  uint32_t vobu_ea;         /**< end address of this VOBU */
+  uint32_t vobu_1stref_ea;  /**< end address of the 1st reference image */
+  uint32_t vobu_2ndref_ea;  /**< end address of the 2nd reference image */
+  uint32_t vobu_3rdref_ea;  /**< end address of the 3rd reference image */
+  uint16_t vobu_vob_idn;    /**< VOB Id number that this VOBU is part of */
+  uint8_t  zero1;           /**< reserved */
+  uint8_t  vobu_c_idn;      /**< Cell Id number that this VOBU is part of */
+  dvd_time_t c_eltm;        /**< Cell elapsed time */
+} ATTRIBUTE_PACKED dsi_gi_t;
+
+/**
+ * Seamless Playback Information
+ */
+typedef struct {
+  uint16_t category;       /**< 'category' of seamless VOBU */
+  uint32_t ilvu_ea;        /**< end address of interleaved Unit */
+  uint32_t ilvu_sa;        /**< start address of next interleaved unit */
+  uint16_t size;           /**< size of next interleaved unit */
+  uint32_t vob_v_s_s_ptm;  /**< video start ptm in vob */
+  uint32_t vob_v_e_e_ptm;  /**< video end ptm in vob */
+  struct {
+    uint32_t stp_ptm1;
+    uint32_t stp_ptm2;
+    uint32_t gap_len1;
+    uint32_t gap_len2;
+  } vob_a[8];
+} ATTRIBUTE_PACKED sml_pbi_t;
+
+/**
+ * Seamless Angle Infromation for one angle
+ */
+typedef struct {
+  uint32_t address; /**< offset to next ILVU, high bit is before/after */
+  uint16_t size;    /**< byte size of the ILVU pointed to by address */
+} ATTRIBUTE_PACKED sml_agl_data_t;
+
+/**
+ * Seamless Angle Infromation
+ */
+typedef struct {
+  sml_agl_data_t data[9];
+} ATTRIBUTE_PACKED sml_agli_t;
+
+/**
+ * VOBU Search Information
+ */
+typedef struct {
+  uint32_t next_video; /**< Next vobu that contains video */
+  uint32_t fwda[19];   /**< Forwards, time */
+  uint32_t next_vobu;
+  uint32_t prev_vobu;
+  uint32_t bwda[19];   /**< Backwards, time */
+  uint32_t prev_video;
+} ATTRIBUTE_PACKED vobu_sri_t;
+
+#define SRI_END_OF_CELL 0x3fffffff
+
+/**
+ * Synchronous Information
+ */
+typedef struct {
+  uint16_t a_synca[8];   /**< offset to first audio packet for this VOBU */
+  uint32_t sp_synca[32]; /**< offset to first subpicture packet */
+} ATTRIBUTE_PACKED synci_t;
+
+/**
+ * DSI packet
+ */
+typedef struct {
+  dsi_gi_t   dsi_gi;
+  sml_pbi_t  sml_pbi;
+  sml_agli_t sml_agli;
+  vobu_sri_t vobu_sri;
+  synci_t    synci;
+  uint8_t    zero1[471];
+} ATTRIBUTE_PACKED dsi_t;
+
+
+#if PRAGMA_PACK
+#pragma pack()
+#endif
+
+#endif /* LIBDVDREAD_NAV_TYPES_H */